You can’t be tutored for the test, this is just incorrect. DH runs a tutoring company for this.
CEM which I assume is your area, changes every year to be unpredictable.
You can’t “learn questions”. You either have the ability to “get it” or not.
If you weren’t coached, and don’t pass, but are intelligent - that will and should catch up as you go through school. If it doesn’t, then you weren’t necessarily the right person for grammar anyway.
When I took my 11+, you had to sit it at the top school, so if you didn’t pass and picked a grammar you could lose your place at preferred comp. So I sat mine at a comp and passed.
I went to the comp, I got 12A*s. I then went to the grammar for sixth form. I now work in finance and have done exceptionally well. I’m still in my twenties.
For context, DH tutored a boy once a week for a few months before his 11+. He passed well. He is still in Year 6 and is currently able to get full marks on level 9 GCSE maths questions. He could sit a GCSE paper tomorrow and pass. Not amazingly well but above a 4.
Some children are exceptional. Not just smart by your definitions- you aren’t their actual teacher and you cannot comment.
Yes the system can be unfair for those who can’t get teachers. But a good parental home would make use of free resources and a kid that actually wants it would work for it. So I do believe they would get in.